TRSF3221IPW Equivalent & Substitute Parts

Part Overview

The TRSF3221IPW is a full-duplex RS232 transceiver manufactured by Texas Instruments, housed in a 16-TSSOP surface mount package. This interface IC operates across a 3V to 5.5V supply range and supports data rates up to 1 Mbps with 500 mV receiver hysteresis. The device is currently classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and component procurement.

Substiute Parts

TRSF3221IPW

Texas InstrumentsIn Stock: 12762TRSF3221IPW Datasheet

Current PartRFQ

TRSF3221ECPWR

Texas InstrumentsIn Stock: 8108TRSF3221ECPWR Datasheet

MFR RecommendedRFQ

SN65C3221PW

Texas InstrumentsIn Stock: 3123SN65C3221PW Datasheet

Parametric EquivalentRFQ

MAX3227EEUE+

Analog Devices Inc./Maxim IntegratedIn Stock: 1619MAX3227EEUE+ Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TRSF3221IPW is determined by strict equivalence across the following parameters:

• Protocol: RS232
• Number of Drivers/Receivers: 1/1 configuration
• Duplex Mode: Full
• Package / Case: 16-TSSOP (0.173", 4.40mm Width)
• Mounting Type: Surface Mount
• Receiver Hysteresis: 500 mV
• Data Rate: 1 Mbps
• Voltage - Supply: 3V ~ 5.5V
• RoHS Status: ROHS3 Compliant

All substitute parts listed maintain these core electrical and mechanical specifications, ensuring direct functional compatibility in applications designed for the TRSF3221IPW.

Parameter Comparison

Engineering Selection Recommendations

TRSF3221ECPWR is the manufacturer-recommended substitute. This Texas Instruments part maintains full electrical equivalence and is currently in active production status. The operating temperature range is narrower (0°C ~ 70°C versus -40°C ~ 85°C), which must be evaluated against application requirements. Packaging is supplied as Tape & Reel (TR), suitable for automated assembly processes.

SN65C3221PW provides parametric equivalence with identical operating temperature range (-40°C ~ 85°C) and is also manufactured by Texas Instruments. This part is classified as obsolete, similar to the primary device. Packaging is supplied in Tube format.

MAX3227EEUE+ is manufactured by Analog Devices Inc./Maxim Integrated and maintains full electrical and thermal specifications, including the extended operating temperature range (-40°C ~ 85°C). This device is in active production status, offering long-term availability. Packaging is supplied in Tube format.

All three substitute parts carry ROHS3 compliance and are suitable for direct replacement in applications where the TRSF3221IPW is specified.

Frequently Asked Questions (FAQ)

Q: Can TRSF3221ECPWR replace TRSF3221IPW in all applications?

A: TRSF3221ECPWR is electrically equivalent across all specified parameters. However, the operating temperature range differs: TRSF3221ECPWR operates from 0°C to 70°C, while TRSF3221IPW operates from -40°C to 85°C. Applications requiring extended temperature operation must use SN65C3221PW or MAX3227EEUE+ instead.

Q: What is the difference between the substitute parts?

A: All three substitutes maintain identical electrical specifications (RS232 protocol, 1/1 driver/receiver configuration, full duplex, 1 Mbps data rate, 3V–5.5V supply, 500 mV receiver hysteresis). Differences exist in manufacturer (Texas Instruments versus Analog Devices Inc./Maxim Integrated), product status (active versus obsolete), and packaging format (Tape & Reel versus Tube).

Q: Are there packaging considerations when selecting a substitute?

A: Yes. TRSF3221ECPWR is supplied in Tape & Reel (TR) format, optimized for high-volume automated assembly. SN65C3221PW and MAX3227EEUE+ are supplied in Tube format, suitable for lower-volume or manual assembly processes. All parts use the identical 16-TSSOP surface mount package.

Q: Which substitute offers the best long-term availability?

A: TRSF3221ECPWR and MAX3227EEUE+ are both in active production status, providing superior long-term availability compared to the obsolete TRSF3221IPW and SN65C3221PW. Between these two, TRSF3221ECPWR is the manufacturer-recommended option from Texas Instruments.

Q: Can MAX3227EEUE+ be used in applications requiring -40°C operation?

A: Yes. MAX3227EEUE+ supports the full operating temperature range of -40°C to 85°C, matching the original TRSF3221IPW specification. This makes it suitable for extended-temperature applications where TRSF3221ECPWR cannot be used.